let index=async(ctx,next)=>{
  ctx.body=`   <form action="/login" method="POST">
  <label>点击登录</label>
  <input type="submit" value="">
</form>`
}
let login=async(ctx,next)=>{
    ctx.render("Hollo.html")
}
module.exports={
    "/":["get",index],
    "/login":["post",login]
}